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Author (up) Reyes-Bozo, L.; Herrera-Urbina, R.; Saez-Navarrete, C.; Otero, A.F.; Godoy-Faundez, A.; Ginocchio, R. pdf  doi
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  Title Rougher flotation of copper sulphide ore using biosolids and humic acids Type
  Year 2011 Publication Minerals Engineering Abbreviated Journal Miner. Eng.  
  Volume 24 Issue 14 Pages 1603-1608  
  Keywords Flotation collectors; Flotation froths; Flotation reagents  
  Abstract In the quest of new, less hazardous, and more ambient-friendly froth flotation reagents, the use of biosolids or humic acids as both collector and frother for the concentration of copper sulphide ores was investigated. Rougher flotation tests were conducted in Denver cells on a laboratory scale, and metallurgical indicators such as copper recovery, copper concentrate grade, and concentration and enrichment ratios were compared with those obtained under similar conditions but using conventional collectors and frothers for the industrial flotation of copper sulphide ores. With a dosage of 10% (w/w) biosolids, copper recovery and grade were 26% and 0.81%, respectively. The copper recovery and grade obtained with 1.5% (w/w) salt of humic acids were 29.7% and 3.5%, respectively. A significantly higher copper recovery (65.1%) was obtained with conventional industrial collectors and frothers, but the grade was also low (3.1% Cu). With the same dosage of humic substances, humic acid show that the flotation rate constant was significantly higher (0.2 min(-1)) than that obtained with the same dosage of biosolids (0.09 min(-1)). These results indicate that humic acids have more affinity than biosolids for copper-containing mineral species, and also show that biosolids and humic acids could be used as both collector and frother in the sulphide mineral concentration process by froth flotation. Because the distribution of iron in the concentrate obtained with biosolids is highest, these materials seem to have more affinity for pyrite. (C) 2011 Elsevier Ltd. All rights reserved.  
  Address [Reyes-Bozo, Lorenzo; Saez-Navarrete, Cesar] Pontificia Univ Catolica Chile, Dept Ingn Quim & Bioproc, Santiago, Chile, Email: lcreyes@ing.puc.cl  
  Corporate Author Thesis  
  Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0892-6875 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000297000700010 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 181  
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